Two evolutionarily conserved sequence elements for Peg3/Usp29 transcription.

ABSTRACT:

Background

Two evolutionarily Conserved Sequence Elements, CSE1 and CSE2 (YY1 binding sites), are found within the 3.8-kb CpG island surrounding the bidirectional promoter of two imprinted genes, Peg3 (Paternally expressed gene 3) and Usp29 (Ubiquitin-specific protease 29). This CpG island is a likely ICR (Imprinting Control Region) that controls transcription of the 500-kb genomic region of the Peg3 imprinted domain.

Results

The current study investigated the functional roles of CSE1 and CSE2 in the transcriptional control of the two genes, Peg3 and Usp29, using cell line-based promoter assays. The mutation of 6 YY1 binding sites (CSE2) reduced the transcriptional activity of the bidirectional promoter in the Peg3 direction in an orientation-dependent manner, suggesting an

SUBMITTER: Kim JD 

PROVIDER: S-EPMC2615030 | biostudies-literature | 2008 Dec

REPOSITORIES: biostudies-literature